<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <!-- 引入Vue -->
  <script src="../js/vue.js"></script>
  <title>2.姓名案例methods语法实现</title>
</head>

<body>
  <!-- 创建一个容器 -->
  <div id="root">
    姓:<input type="text" v-model="firstName"><br>
    名:<input type="text" v-model="lastName"><br>
    <!-- 插值语法里面写方法函数 -->
    全名:<span>{{fullName()}}</span>
  </div>

  <script>
    Vue.config.productionTip = false
    let a;
    // 创建一个实例
    new Vue({
      el: '#root',
      data: {
        firstName: '张',
        lastName: '三'
      },
      methods: {
        fullName(){
          // this指向该实例
          return this.firstName + '-' + this.lastName;
        }
      }
    })
  </script>
</body>

</html>